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对图形的边缘，可实现图像到链码，链码到图像的转换。(right to the brink of graphics, images can be realized chain code, the chain code to the image conversion.)

用MATLAB实现QPSK在AWGN信道的调制(Using MATLAB to achieve QPSK modulation in AWGN channel)

资料中介绍了几种经典信噪比估计算法的编码并进行比较，包括误差矢量幅值法、最大似然估计、迭代法以及奇异值分解法。(Data introduces several classical coding SNR estimation algorithm and compared, including error vector magnitude, maximum likelihood estimation, iterative method and singular value decomposition.)

This is the thwaites method for boundary layer over flat plate . This is an empirical method based on the observation that most laminar boundary layers obey the following relationship .it will help our calculate coefficient drag , velocity over flat plate.

张正友标定，带有实验数据，适合初学者学习和理解(Zhang Zhengyou calibration with experimental data, suitable for beginners to learn and understand)

说明：  一本关于matlab多变量数值计算的电子书 Jeffery Cooper著(Matlab on a multi-variable numerical calculation of e-books Jeffery Cooper)

沈捷、汤涛编写的最新的关于谱方法的书的源代码！！(Shen Jie, Tang Tao, prepared the latest books on the spectral source code! !)

Approximation of functions matlab

Grounding of Electrical systems.

HSV空间 基于火焰动态特征和运动检测的火灾检测(Based on the dynamic characteristics of the flame of fire detection and motion detection)